Affordable 3D motion capture app

Hi,

I'm developing a motion capture app that will bring 3D data to basketball players who would like to
improve their shot. The system consists of an elbow sleeve and wrist sleeve with sensors that will display your shot in 3D, from all angles with angular speed ( rate of change of angle of the shoulder, elbow and wrist) and a mobile app.

Atletes will be able to model/compare their shot to a NBA players shot, and get feedback on what to improve.

Would like to know if anyone is interested in this and what you guys would pay for this system?

Thank you for your time.